The linear calendar is widely used in Montessori environments, allowing children to have a more concrete idea of the passage of time.The passage of time is a concept very abstract to be understood by kids. With this calendar, they can visualize the entire year in a continuous line, and in this way, they learn the concepts of year, months, weeks, days, and seasons.This calendar must be placed on the wall continuously (the 12 months in a row) for children to understand better what is one complet